Power-transmission mechanism for railroad rolling stock



L. E. KEIL April 23, 1929.

POWER TRANSMISSION MECHANISM FOR RAILROAD ROLLING STOCK Filed May 14. 1926 4 Sheets-Sheet April 23, 1929. LLE. KEIL 0,360.

POWER TRANSMISSION mmcmmxsm FOR RAILROAD ROLLING swocx Filed May 14. 1926 4 Sheets-Shet 2 L. E. "KEIL April 23, 1929.

POWER TRANSMISSION MECHANISM FOR RAILROAD ROLLING STOCK Filed May 14. 1926 4 Sheets-Sheet April'23', 1929.

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1.. E. KEll POWER TRANSMISSION MECHANISM FOR RAILROAD ROLLING STOCK Filed May 14. 1926 4 Sheets-Sheet Patented Apr. 23,1929.

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LEWIS n. train, on onzoaoo, r rnols, Assrenon- T RAILWAY LOCdMOTOR COM- PANY, on oirlonoo, ILLINOIS, A oonronamron or ILLINOIS.

rownn-rnanslvrrssion MECHANISM ron RAILROAD ROLLING STOCK.

Application filed Mayanism and power generators. The bodies of cars and. locomotives of the class to which y invention relates, are supported on a pair of trucks, which, in general, are similar to the trucks upon which the usual locomotive.

drawn cars are mounted, but of which one or more of the pairs of wheels is driven by an eiune mounted on the car body. In the construction to which my invention relates more specifically, the'engine ismounted on the body below the same and power is transmitted therefrom to the axle of the driven wh iiels by siiitable shaftiag and gearing.

in the drawings accompanying and formlug a part of this specification, Figure 1 side elevation of an end of a car, the siipi iorting the same and the driving c,'the car body being diagrammatically wn in dotted lines and the truck, wheels, driving engine and connections in full lines; l

ly broken away; Fig. 3 is a side elevation am-ally in vertical section on a plane through the axle of th driving wheels; Fig. 4 is a 1"]. agmentary view of a truck in side elevation, parts being shown in vertic'al section; and Fig. 5 a horizontal section through the gearing casing on the driving axle, parts beshown iulelevation. Each part is identified ly "the same reference character wherever it occurs in the several views.

Referring first to Fig. 1, of the drawings, the bodyof the vehicle, which may be a passenger car, freight car, locomotive, or

the like, is partlyshown in dottcd lines atA. The truck as an entirety is indicated at B and the engine at (1- The engine may be of any desired or approved type driving a rotary shaft as shaft 4 I The truck is shown as comprising a frame 7, on which is mounted a bolster 8,having the usual center plate 9, on which the car body is mounted at 10.- The frame is shown supported as usual on equalizer bars 11,

through springs 12, 13. The ends of the equalizer bars, according to usual practice,

rest at their respective opposite ends uponjournal boxes 1%, guided as usual-1n rec tangular openings'in depending portions of the truck frame, As usual in such truck construction there are two pairs of wheels 15, 16, secured to axles 17 18, respectively,

2 is atop plan View of the truck, partupon the packings.

1926. Serial No. 109,172.

journaled in the'journal boxes referred to above. The journals 20 of the axlesas usual extend into the journal boxes and beneath pillow blocks 21 between which and thetop '60 wall of the journal boxes interposed wedges 22. p

' 1 As thus far described, the construction is, or may be, of usual character.

The axle and pair of wheels toward the end of the car are undriven and needbe no, further described.

The axle 18, of the inner pair of wheels,

however, being the driven vaxle, is provided with a beveled gear 2% keyed thereto at 25.

Said gear is in mesh with a gear 26, on a stub shalt 27, and the latter is connected by shaft 28 having a slip joint 28, and uni- I versal joints 29 with the shaft 6 of the engine abovementioned. The gears 24, 2-6 are mirroimded by a casing 30, see Figs. 3 and 5, which is mounted by roller bearingsupon .the driving axle 18. The casing comprises central barrel: portlon 31, fitted with end plates 32, which "latter are formed about their respective central openings with Cyling drical flanges. 33, which fit snugly within openings of similar diameter formed in the ends of the barrel. Within the flanges 33 are mounted the outer races 34 of the roller bearing. The inner races 35, 35 of the rollbearing are carried by the axle; The axle '18 is provided with a collar 36 for the purposeof properly locating the race 35 and gear '24 which fit snugly upon opposite sides thereof. A sleeve-37 of the proper length extendsbetween the gear 24- and the race 35 so that the latter is properly spaced from therace 35. The bearing rolls are. shown Intermediate the ends of the barreland the end'plates are gaskets 39. The central openings through the end plates are closed by stufiing box castings 40 bolted thereto ate-1 and packed at 4.2.

} lands 43 which maybe of usual or approved type hear casting is closedabout the shaft by any'suitable means as an annulus 50 bolted thereto, a collar 51 on the shaft, and a nut. 52.

housing In order to maintain the casing in position and prevent it turning about the axle 18, and for other purposes which Will appear, I provide a torque bar or casting 54. The. latter is pivoted to a bracket plate by -means of a hinge bolt 56, extending through ears upon the torque rod and bracket plate, respectively, and t 1e latter is bolted at 57 to the casing which is "formed With flat seats for the purpose. The outer or free end of the torque rod or casting 54 engages a draft bolt 58, secured. between flanges 59, 6O oi the truck transom 61, se

particularly Fl 3 of the drawing.

The torque bar is formed with an openiin 62 through which the draft belt extends loosely and on opposite sidesoif the torque bar and between the same and the respective flanges of the truck transon'i are compressed shock springs (33 coiled about the draft bolt.

The springs are so designed and mounted as to provioe a play for the end oi the torque bar of about a half inch, prei'e. ibiy,

so that a very limited movement ol. the gear easing or housing about the axle 18 is permitted, at the end of which movement in either direction the torque bar is stopped and thus prevents further turning oi the The springs, however,- absorb shock caused by the passing o i the wheels over rail joints andv the like. It may be mentioned that provisioz'l a ..'nst exe sive rotation of the housii'ig is necessary to avoideramping oil? the universal joints 29 and shaft 28. A Further function ol the torque bar is to maintain the journals of the driven aide in proper relation to the journal hearing. The journal bearings, as hetero lescribed, are of the usual type and there is a tendeno due to the driving effort between the wheels of the driven axle and the rails to cause the axle to ride up from under the journal bearings out of its central position therein. Thismovemeiit, however, is limited by the torque bar bearing atone end against the draft bolt and at the other end against the bolt by which it is attached lo the housing, in which housing the axle is accurately mounted by the roller bearing. Furthermore, the pivoting oi" the torque bar at its ends as described permits the slight movement of the axle transversely oi the truck which is incident to such construetions. The pivoting of the torque bar on the casing also permits the ready assembling and disassembling thereof as the torque bar may be readily swung to oneside or the other after removing the draft bolt.

I claim:

1. In a truck for a car of the class described and in combination with the frame, axles and wheels thereof, means for driving one of said axles, journal boxes mounted to slide in said frame and into which the journals of said driven axle extend, pillow blocks on the journals of said axle Within the journal boxes, a member journaled on said driv n axle independently of the truck, a bar attached to said member and to a nonrotary part of the truck and adapted to limit movement said axle horizontally with respect to the pillow block.

2. In a truck for a car of the class (l6? scribed and in combination with the frame, axles and wheels thereof, means for driving one of said axle: comprising a gear mounted lllGlGOn, a second gear in n'iesh with the first named gear and a shaft on which the said second gear is mounted, a housing enclosing said gear journaled upon the said axle and in which said shaft is ji'iurmiled, a torque bar pivoted on s id housing, the free end of said torque bar being provided with an opening, a draft bolt mounted in. the truck transom and extending through the opening in the torque bar, springs mounted on the respectively ooposite sides of the torque bar, surrouiuling the draft bolt and so sup ported as toyieldingly main min the torque bar in an intermediate posutiou with respect tosaid bolt.

3. In a truck for a car oi? the class described and in combination with the frame, axles and wheels therein, means l or driving one of said axles comprising a gear mourned thereon, a second. gear in mesh with the lirst named gear, a shaft on which the said second gear is mounted, means :lor driving said shaft, a housing enclosing'said gears journailed upon the said. axle and in which said shaltis journaled, a torque bar vertieail' pivoted to said housi' at onoeml, the o.

. H L 1 end UI'HLHl b: r eing loosely connected to the frame to permit a slight vertical. movement thereof, and springs intermediatr'i the frame and torque bar for normally ma' 1-- taining the latter in an intermediate position.

In testimony whereof, I have subscribed. my name.

LEWIS n Knit. 

